Combined feed and cut-off valve



March 24, 1925. 1,530,668

M. H. HARTER COMBINED FEED AND CUT-OFF VALVE Filed April 26, 1924 gwventoz ,f- 35E/WWE@ ,f/ b] atlozweq Patented Mar. 24, '1925. .t

UNITED STATES PATENT 'OFFICE MARION H. HAR'IER, 0F MINNEAPOLIS, MINNESOTA, ASSIGNOR, BY MESNE ASSIGN MENTS, T FRANK J. EVANS AND HERMAN C. HANSON, BOTH OF MINNEAPOLIS,

MINNESOTA.

COMBINED FEED AND CUT-OFFVALVE.

Application led April 26, 1924. Serial No. 709,149.

l0 will enable others skilled in the art to which it appertains to make and use the same.

My present invention has for its object to provide combined feed und cut-ofi valves intended for general use but especially adapted for use in connection with oil burners, and to this end it consists of the novel 'devices and combinations of devices hereinafter described and defined in the claims.

In the accompanying drawings, which illustrate the` invention, like characters indicate like parts throughout the several views. Referring lto the drawings: Fig. 1 is a view partly in side elevation and partly in section, with some parts indicated in different positions, by means of broken lines; and

Fig. 2 is a fragmentary detail view showing the stem of thecut-off valve `and controlling lever and spring.

The numeral 3 indicates an oil supply pipe which maybe assumed to lead from a suitable source of supply to a burner, not shown. Interposed in the supply pipe 3 is a body member 4 having a Z-shaped port 5 for connecting one of the sections of the supply pipe 3 with the other. y

Iflpper and lower diametrically opposite stu ng box-equipped nipples 6 and 7, respectively are formed with the -body member 4 andJ project radially therefrom. The oil feed or controlling valve 8 is mounted in the Y upper nipple 6 and works through its'stuftng box, and an oil cut-off valve 9 is mounted 1n the lower nipple 7 and works through its stuffing box. These valves 8 and 9 Vare both of the needle type, axially aligned, and arranged to seat 1n opposite en il of the intermediate or vertical portion of t e port 5.

Vertically ldisposed upper and lower brackets 10 and 11, respectively, have transversely split bases 12 andk 13, respectively, and which bases are turnably mounted on the nipples 6 and 7, respectively. The end portions of each base 12v and 13 are connected by a screwl 14 for clamping said bases on the respective nipples with the brackets 10 and 11 set in .different rotated positions around the respective nipples. The outer end portions of the brackets 10 and l1 extend horizontally over the respective nipples 6 and 7 and are apertured to receive the stems of the valves 8 and 9, respectively, which work therethrough.

Upper and lower knurled nuts have screw-threaded engagement with the stem of the feed valve 8 and afford adjustable stops 15 and 16, respectively, forengagement with opposite faces of the bracket 10 to limit the closing and opening movement of said valve. A s ring latch 1177 is secured to the bracket 10 or engagement with the,`

knurled stop 15 to hold the same where set. An operating lever 18 for the feed valve 8 is inserted through a vertical -slot in the bracket 10-v and fulcrumed at 1,9 to said bracket. The inner 0r short end of said lever 18 is pivoted at 20 to an arm 21 secured to the stem o f the valve 8 between the nip-ple 6 and stop 16. Mounted on theoperating lever 18.k is a sliding weight 22 releasably held in different longitudinal adjustments on said -lever by a set screw 23, and which weight holds `the feed valve 8 open.

A lifting chain 24 is attached to the outer end. of the lever 18 for closing the feed valve 8, and which chain may be operated by hand or by a thermostat. The stop 15 is so set as to hold the ,feed valve 8 slightly olpen when the lever ,18 is raised by the ciain 2li to permit a sufficient flow of oil through theV supply pipe 3 to a pilot light, not shown, for the burner.

Encircling the stem of the cut-off valve 9 is a coiled spring 25' compressed between a collar 26 on said stem and the bracket 11 and under strain to close said cut-off valve. A bell crank lever 27 is pivoted at 28 to thelower end of the stem of the cut-oif valve 9, and which short arm is bifurcatedl and has journaled therein two anti-friction rolrlers .29 which, together with the short arm, engage the under side of the bracket 11 and hold the cut-off valve 9 retracted to open the' port 5 against the tension of the spring 25. The .purpose of the anti-frict0n rollers 29k is to cause the short arm of the bell crank lever 27 to freely move overthe bracket 11 bracket 11 when the same nipple 7. f

In case the fire in the burner goes out,l

arm of the bell crank lever 27 and engagesv A the bracket 11 to limit the lifting movement of said long arm. The bucket 31v is held suspended under an overflow pipe Q3 which may be assumed to lead from the'='burner.

Attached to the bracket 11 is a slottedplatev 34 into which the long arm of the bell wcrank lever 27 Works. The purpose of this plate is to cause said lever to turn with .the is adjusted on the the overflow of oil therefrom will be fed by the pipe 33 to the receptacle 31, and the valve of the non-rotary plunger type for. 'independently opening and closing said weight of the oil in said receptacle will swin the bell crank lever 27 downward and there y carry the same out of engagement with the bracket 11,' thusreleasing the spring 25 to close the cut-olf valve 9 and thereby prevent -furtherflow of oil to the burner.

As previously stated, the stops 15 and 16 limit the closing and opening movements of the feed-valve 8 to re late the flow of oil to the burner and at t e same time revent the oil from being entirely cut o to the pilot li to close sai valve either by hand or under the action of a thermostat.

The purpose of adjustably mountingthe brackets 10 and 11is to permit the lever 18 and bell crank lever 27 together with the receptacle 31 to be set in various different i positions to the pipe 3 as may be convenient 1n installing'the apparatus.

What I claim is: 1'. The combination with, a body member having a port, of a feed valve and a cut-o" port, yielding means under strain to open the feed valve, yielding means under'strain vto close the cut-off valve, and an automatic trip normally holding the cut-off valve open.

2..The structure defined in claim- 1 in further combination with adjustable means *for limiting the closing movement -of the feed valve.

3. The struc-ture 'defined in claim 1 in further combination with adjustable means for limiting the opening and closing move- .ments ofthe feed valve.

htwhen the lever 18 is raised.

ranged to discharge into said receptacle.

4. The combinaonwith a body member having a port, of a feed valve and a cut-off valve of the non-rotary plunger type mounted in the body member for independently opening and closing said port, a spring under strain to close the cut-off valve, a bell crank lever pivoted to the stem of the cut-off` valve, the short arm of said .lever normally engaging Van abutment to hold the cut-off valve open against the tension 'of saidpring, a lreceptacle carried by the long arm of said lever, and an overflow pipe arranged to discharge intosaid receptacle.

5. The combination with a body member having a port, of upper and lower stuffing box-equippednipples on said body member, a feedvalve and a cut-off valve mounted respectively in said upper and lower nipples, said two valves being arranged to seat in opposite ends of said port, upperl and lower brackets adjust-ably mounted respectively on said upper and lower nipples, an operating lever attached to the feed valve and fulcrumed on 'the upper bracket, a spring reacting against the lower bracket and operative on the cut-off valve to close the same,

- a bell crank lever pivoted to the stem of the .ofi` valye open agginst the tension of saidv spring, a receptac carried by the long arm of said bell crank lever, said bell crank lever being held by the lower bra'cketffor adjustment therewith, and an overflow pipe ar- 6. The structure defined in lclaim 5 in .further combination with adjustable means for limiting the closing movement of the feed valve.'

7. The structure defined in claim 5 in 100 further combination with adjustable means for limiting the opening movement of thc feed valve. l

8. The structure defined in claim 5 in further combination vwith yielding means operative on theoperating lever to open the feed valve, and\means by which said lever may be operated to close said valve.

9. The structure defined in claim 5l in which the ,short arm of the bell crank is bifurcated to receivev the stem of thecut-ofi' valve and equipped with a pair of antifriction rollers for engagement with the lower bracket. t In testimony whereof I affix my signaure.

- MARioN H. Haaren. 

